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authorDuncan Laurie <dlaurie@chromium.org>2012-08-16 16:06:03 -0700
committerStefan Reinauer <stefan.reinauer@coreboot.org>2012-11-07 18:39:21 +0100
commit5c103aa8ae56c0758a3e8af11dc70fb62f833f7e (patch)
treed679e0c68f23f8266a5a134fd51c57ff654529f6 /src/include/pc80
parent93ded5905c36d34c4e4f132623c854bbd895b8c9 (diff)
downloadcoreboot-5c103aa8ae56c0758a3e8af11dc70fb62f833f7e.tar.xz
RTC: Write build date in BCD when clearing RTC CMOS
Check the RTC on boot after RTC battery failure and ensure that the reported build date matches what is reported: > grep ^rtc /proc/driver/rtc rtc_time : 01:00:21 rtc_date : 2012-08-16 Change-Id: If23f436796754c68ae6244ef7633ff4fa0a93603 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: http://review.coreboot.org/1709 Reviewed-by: Marc Jones <marcj303@gmail.com> Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/include/pc80')
-rw-r--r--src/include/pc80/mc146818rtc.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/include/pc80/mc146818rtc.h b/src/include/pc80/mc146818rtc.h
index a916761222..61b522ca74 100644
--- a/src/include/pc80/mc146818rtc.h
+++ b/src/include/pc80/mc146818rtc.h
@@ -63,6 +63,8 @@
# define RTC_24H 0x02 /* 24 hour mode - else hours bit 7 means pm */
# define RTC_DST_EN 0x01 /* auto switch DST - works f. USA only */
+#define RTC_TO_BCD(value) (((value / 10) << 4) | (value % 10))
+
/**********************************************************************/
#define RTC_INTR_FLAGS RTC_REG_C
/* caution - cleared by read */